dlls/gdiplus/font.c

   1 /*
   2  * Copyright (C) 2007 Google (Evan Stade)
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "wingdi.h"
  24 #include "winnls.h"
  25
  26 #include "objbase.h"
  27
  28 #include "gdiplus.h"
  29 #include "gdiplus_private.h"
  30
  31 GpStatus WINGDIPAPI GdipCreateFontFromLogfontW(HDC hdc,
  32     GDIPCONST LOGFONTW *logfont, GpFont **font)
  33 {
  34     HFONT hfont, oldfont;
  35     TEXTMETRICW textmet;
  36
  37     if(!logfont || !font)
  38         return InvalidParameter;
  39
  40     *font = GdipAlloc(sizeof(GpFont));
  41     if(!*font)  return OutOfMemory;
  42
  43     memcpy(&(*font)->lfw.lfFaceName, logfont->lfFaceName, LF_FACESIZE *
  44            sizeof(WCHAR));
  45     (*font)->lfw.lfHeight = logfont->lfHeight;
  46     (*font)->lfw.lfItalic = logfont->lfItalic;
  47     (*font)->lfw.lfUnderline = logfont->lfUnderline;
  48     (*font)->lfw.lfStrikeOut = logfont->lfStrikeOut;
  49
  50     hfont = CreateFontIndirectW(&(*font)->lfw);
  51     oldfont = SelectObject(hdc, hfont);
  52     GetTextMetricsW(hdc, &textmet);
  53
  54     (*font)->lfw.lfHeight = -textmet.tmHeight;
  55     (*font)->lfw.lfWeight = textmet.tmWeight;
  56
  57     SelectObject(hdc, oldfont);
  58     DeleteObject(hfont);
  59
  60     return Ok;
  61 }
  62
  63 GpStatus WINGDIPAPI GdipCreateFontFromLogfontA(HDC hdc,
  64     GDIPCONST LOGFONTA *lfa, GpFont **font)
  65 {
  66     LOGFONTW lfw;
  67
  68     if(!lfa || !font)
  69         return InvalidParameter;
  70
  71     memcpy(&lfw, lfa, FIELD_OFFSET(LOGFONTA,lfFaceName) );
  72
  73     if(!MultiByteToWideChar(CP_ACP, 0, lfa->lfFaceName, -1, lfw.lfFaceName, LF_FACESIZE))
  74         return GenericError;
  75
  76     GdipCreateFontFromLogfontW(hdc, &lfw, font);
  77
  78     return Ok;
  79 }
  80
  81 GpStatus WINGDIPAPI GdipDeleteFont(GpFont* font)
  82 {
  83     if(!font)
  84         return InvalidParameter;
  85
  86     GdipFree(font);
  87
  88     return Ok;
  89 }
  90
  91 GpStatus WINGDIPAPI GdipCreateFontFromDC(HDC hdc, GpFont **font)
  92 {
  93     HFONT hfont;
  94     LOGFONTW lfw;
  95
  96     if(!font)
  97         return InvalidParameter;
  98
  99     hfont = (HFONT)GetCurrentObject(hdc, OBJ_FONT);
 100     if(!hfont)
 101         return GenericError;
 102
 103     if(!GetObjectW(hfont, sizeof(LOGFONTW), &lfw))
 104         return GenericError;
 105
 106     return GdipCreateFontFromLogfontW(hdc, &lfw, font);
 107 }
 108
 109 /* FIXME: use graphics */
 110 GpStatus WINGDIPAPI GdipGetLogFontW(GpFont *font, GpGraphics *graphics,
 111     LOGFONTW *lfw)
 112 {
 113     if(!font || !graphics || !lfw)
 114         return InvalidParameter;
 115
 116     *lfw = font->lfw;
 117
 118     return Ok;
 119 }
 120
 121 GpStatus WINGDIPAPI GdipCloneFont(GpFont *font, GpFont **cloneFont)
 122 {
 123     if(!font || !cloneFont)
 124         return InvalidParameter;
 125
 126     *cloneFont = GdipAlloc(sizeof(GpFont));
 127     if(!*cloneFont)    return OutOfMemory;
 128
 129     **cloneFont = *font;
 130
 131     return Ok;
 132 }